Effective elastic properties of layered composites considering non-uniform imperfect adhesion

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Humberto Brito Santana (Author) Other; Ricardo de Medeiros (Author) Other; António Joaquim Mendes Ferreira (Author) FEUP; Reinaldo Rodríguez Ramos (Author) Other; Volnei Tita (Author) Other

Journal

Title: Applied Mathematical Modelling

Vol. 59

Pages: 183-204

ISSN: 0307-904X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 14 Citations

INSPEC

Other information

Authenticus ID: P-00N-SQN

DOI: 10.1016/j.apm.2018.01.009

Abstract (EN): In this study, the effective elastic properties of layered composites are predicted by considering the influence of non-uniform imperfect adhesion. In practical terms, the influence of non-uniform imperfection on the effective properties of layers is evaluated when debonding or delamination occurs between adjacent layers. Thus, the effective properties of two and three-layer composites with imperfect and perfect interfaces are calculated using the finite element method and an analytical technique based on the two-scale asymptotic homogenization method, respectively. In the analyses, it was used a two-layer model with imperfect interface conditions and a three-layer model with perfect conditions to derive analytical expressions of the interlayer properties, which are equivalent to the effect of the imperfection (e.g., debonding). Our numerical results demonstrate that the three-layer model provides an excellent approximation of the two-layer one and it illustrates how the effective properties of the layered composites made from titanium Ti6AI4V and ceramic AD-96 are affected by non-uniform imperfect adhesion.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 22